package thread;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class TreadPoolDemo {
    public static void main(String[] args) {
        //创建具有两条线程的线程池
        ExecutorService threadPool = Executors.newFixedThreadPool(3);
        for (int i =0; i<5; i++){
            Runnable r = ()-> {
                try {
                    Thread t = Thread.currentThread();
                    System.out.println(t.getName() + ":正在执行一个任务...");
                    Thread.sleep(5000);
                    System.out.println(t.getName() + ":任务执行完毕");
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            };
            threadPool.execute(r);
            System.out.println("讲一个任务交给了线程池");
        }
        threadPool.shutdownNow();
        System.out.println("线程执行完毕,关闭线程池");


    }
}
